Valve for blowing-engines, &amp;c.



L. IVERSEN.

VALVE FOR BLOWING ENGINES, 6m.

APPLICATEON FILED FEB. 24, 1914.

1 .291 E2? Patented Oct. 17, 1916.

FFGGL Fifia u HTNESSES INVENTOR Alild TE VALVE FOR BLOWING-ENGINES, 8w.

Specification of 'Letters Patent.

Patentedfict. 1'7, 1916.

Application filed February 24. 1914.. Serial No. sense.

To all whom. it may concern:

Be it known that I, Lonnxz Ivnnsnv a citizen of the United States, and aresident of West- Homestead, in the county of Alle- 5 gheny and State ofPennsylvania, have invented certain new and useful Improvements inValves for Blowing-En ines, &c., of which the following. is aspecification.

T his invention relates to valves for blowing engines, compressors,pumps and other machines variously employed for manipulating gases andliquids, and more particularly to certain variations in the constructionshown in latent No. 1,012,359, granted to inc December 19, 1911, and inmy applicacation filed February 18, 191%, Serial No. 819,405.

The primary object herein is to provide improved means for uniting thevalve and spring, such means being located wholly between those edges ofthe spring which are parallel with the plane of movement of the valve,so that in the coil form here illustrated no portion of the securingmeans protrudes beyond either the inner or the outer periphery of thesecured "spring convolution.

The invention is preferably embodied in a valve which isspring-supported and springguided, features characteristic of thestructures of my above mentioned patent and application.

In the accompanying drawings, Figure 1 isgi vertical section of a valvemechanism which embodies one form of the invention, and Fig fiisee planviewp'f the valve and -spring illustrated'irnfig. 1. F i gl 3 is a viewsimilar tQ FijgJQ', illustrating another means of uniting the valve andspring, and Fig. 4 40 is a. section of a portion of a valve mechanismlike that illustrated in Fig. Lbu't embodying the valve and springuniting means illustrated in Fig. 3.

Referring to the drawings, '2 designates the valve seat which in theform illustrated is multiported at 3, the valve seat being titted inhead or wall l of the machine to which it is applied. ,Plate valve 5 isshown formed with'the inner and outer ring pertions 6 and 7complementary with the valve seat ports, the two ring portions beingcon-- nected by the webs or bridges 8 which support the segmental valveports 9. It will be understood, however, that the valve and valve seatmay be variously ported, the form here shown being only one of variousadaptations. I

In the present invention, as in my above mentioned patent andapplication, the valve is spring-supported and spring-guided. The

spring 10 as here shown is of fiat or plate form rather than of thespring wire form illustrated in my former patent, the plate formproviding greater lateral rigidity. Various means may be employed forfixedly uniting the valve and that portion of the spring which bearsthereagainst with such securing means located wholly between those edgesof the spring which are parallel with the plane of inovement'of thevalve, in the form of spring illustrated those edges being the inner andouter peripheral edges 11 and 11, respectively, of the secured portion12 of the end convolution of the spring. As shown in Figs. 1 and 2,spring portion 12 is secured to the valve by being welded thereto, theweld extending from the spring extrenr ,ity 13 to approximately thepoint indicated by the reference numeral 14, the welded portion beingtinted or shaded while the tree portion of the spring which terminatesin the central ring-like supporting extremity 15 is not shaded. With theparts assembled as in Fig. 1, valve 5 operates between seat 2 and thestop 16, the latter being secured to the seat by bolts 17, the latteralso passing through the ring-like spring center 15, thereby clampingthe valve-supporting and valve-guiding spring in place.

In the form shown in Figs. 3 and 4, part 12 of the spring which bears onthe valve is secured thereto by rivets 18, the secured portion 12 beingsubstantially the same length as the welded portion in the constructionfirst described.

It is characteristic of each of the illustrated forms that the means forsecuring the spring to the valve is located wholly between or within thelongitudinal lines of the spring so that the ports are not obstructednorthe movement of the spring and valve interferred with.

I claim:

1. The combination of a blowing enginevalve, tapered valve-actuatingcoiled spring formed of a relatively thin fiatinetal to resist lateraldeflection and having nesting convolutions adapted to lie in the sameplan when the spring is fully contracted, a. portion of the largerconvolution of the spring adapted to bear flatly orf'the valve, meansrigidly securing a portion of the larger convolution to the valve withthe secur- 7 111g means located wholly between the inner and outer edgesof the secured portion of the spring, and a device to which the smallerend of the spring is secured for rigidly supporting the spring and thevalve against lateral deflection without interfering with the tor sionalstress to which the sprlng is subjected by the action of the valve.

2. The combination of a blowing engine valve, a tapered valveactuatingcoiled spring with each convolution relatively thin and flat, a portionof an end convolution of the spring welded to the face of the valve forinnnovably uniting that portion of the spring with the valve, and asupporting device to which the opposite end convolution of the spring isrigidly secured, the flat metal of the spring and the connectionsbetween the latter and the valve and the support resisting lateraldeflection resulting from torsional stress to which the action of thevalve subjects the spring.

3. Theeoinbination' of a. valve for blowing engines. etc, a taperedvalve-actuating and guiding'coiled spring formed of rela tively thinflat metal which resists lateral de flection and having nestingconvolntions, a portion of the length of the spring at one end thereofbearing flatly on the valve and welded thereto, and a support'towhich'the opposite end of the spring is secured.

it. The combination of a valve seat, a valve stop rigid with andextending over the seat and separated therefrom by a relatively liarrowspace, a valve movable in said space, and a valve actuating and guidingcoiled spring located between the valve and stop and at one end rigidlyheld between the stop and seat and at its opposite end welded to thevalve, the spring formed of relatively thin flat metal which resistslateral deflection and having nesting convolutions adapted to lie in thesame plane when contracteih In testimony whereof I aliix my signature"in presence of two witnesses.

LORENZ IVERSEN. Witnesses:

James" H. DAVIS, \Vaurnn TERRlLL.

